diff options
Diffstat (limited to 'Documentation/diff-options.txt')
| -rw-r--r-- | Documentation/diff-options.txt | 146 |
1 files changed, 81 insertions, 65 deletions
diff --git a/Documentation/diff-options.txt b/Documentation/diff-options.txt index 7d73e976d9..53ec3c9a34 100644 --- a/Documentation/diff-options.txt +++ b/Documentation/diff-options.txt @@ -22,84 +22,94 @@ ifndef::git-format-patch[] -p:: -u:: --patch:: - Generate patch (see section titled -ifdef::git-log[] -<<generate_patch_text_with_p, "Generating patch text with -p">>). -endif::git-log[] -ifndef::git-log[] -"Generating patch text with -p"). -endif::git-log[] + Generate patch (see <<generate_patch_text_with_p>>). ifdef::git-diff[] This is the default. endif::git-diff[] -s:: --no-patch:: - Suppress diff output. Useful for commands like `git show` that - show the patch by default, or to cancel the effect of `--patch`. + Suppress all output from the diff machinery. Useful for + commands like `git show` that show the patch by default to + squelch their output, or to cancel the effect of options like + `--patch`, `--stat` earlier on the command line in an alias. + endif::git-format-patch[] ifdef::git-log[] ---diff-merges=(off|none|on|first-parent|1|separate|m|combined|c|dense-combined|cc|remerge|r):: +-m:: + Show diffs for merge commits in the default format. This is + similar to '--diff-merges=on', except `-m` will + produce no output unless `-p` is given as well. + +-c:: + Produce combined diff output for merge commits. + Shortcut for '--diff-merges=combined -p'. + +--cc:: + Produce dense combined diff output for merge commits. + Shortcut for '--diff-merges=dense-combined -p'. + +--dd:: + Produce diff with respect to first parent for both merge and + regular commits. + Shortcut for '--diff-merges=first-parent -p'. + +--remerge-diff:: + Produce remerge-diff output for merge commits. + Shortcut for '--diff-merges=remerge -p'. + --no-diff-merges:: + Synonym for '--diff-merges=off'. + +--diff-merges=<format>:: Specify diff format to be used for merge commits. Default is - {diff-merges-default} unless `--first-parent` is in use, in which case - `first-parent` is the default. + {diff-merges-default} unless `--first-parent` is in use, in + which case `first-parent` is the default. ++ +The following formats are supported: + ---diff-merges=(off|none)::: ---no-diff-merges::: +-- +off, none:: Disable output of diffs for merge commits. Useful to override implied value. + ---diff-merges=on::: ---diff-merges=m::: --m::: - This option makes diff output for merge commits to be shown in - the default format. `-m` will produce the output only if `-p` - is given as well. The default format could be changed using - `log.diffMerges` configuration parameter, which default value +on, m:: + Make diff output for merge commits to be shown in the default + format. The default format can be changed using + `log.diffMerges` configuration variable, whose default value is `separate`. + ---diff-merges=first-parent::: ---diff-merges=1::: - This option makes merge commits show the full diff with - respect to the first parent only. +first-parent, 1:: + Show full diff with respect to first parent. This is the same + format as `--patch` produces for non-merge commits. ++ +separate:: + Show full diff with respect to each of parents. + Separate log entry and diff is generated for each parent. + ---diff-merges=separate::: - This makes merge commits show the full diff with respect to - each of the parents. Separate log entry and diff is generated - for each parent. +combined, c:: + Show differences from each of the parents to the merge + result simultaneously instead of showing pairwise diff between + a parent and the result one at a time. Furthermore, it lists + only files which were modified from all parents. + ---diff-merges=remerge::: ---diff-merges=r::: ---remerge-diff::: - With this option, two-parent merge commits are remerged to - create a temporary tree object -- potentially containing files - with conflict markers and such. A diff is then shown between - that temporary tree and the actual merge commit. +dense-combined, cc:: + Further compress output produced by `--diff-merges=combined` + by omitting uninteresting hunks whose contents in the parents + have only two variants and the merge result picks one of them + without modification. ++ +remerge, r:: + Remerge two-parent merge commits to create a temporary tree + object--potentially containing files with conflict markers + and such. A diff is then shown between that temporary tree + and the actual merge commit. + The output emitted when this option is used is subject to change, and so is its interaction with other options (unless explicitly documented). -+ ---diff-merges=combined::: ---diff-merges=c::: --c::: - With this option, diff output for a merge commit shows the - differences from each of the parents to the merge result - simultaneously instead of showing pairwise diff between a - parent and the result one at a time. Furthermore, it lists - only files which were modified from all parents. `-c` implies - `-p`. -+ ---diff-merges=dense-combined::: ---diff-merges=cc::: ---cc::: - With this option the output produced by - `--diff-merges=combined` is further compressed by omitting - uninteresting hunks whose contents in the parents have only - two variants and the merge result picks one of them without - modification. `--cc` implies `-p`. +-- --combined-all-paths:: This flag causes combined diffs (used for merge commits) to @@ -207,14 +217,15 @@ have to use `--diff-algorithm=default` option. part. Maximum width defaults to terminal width, or 80 columns if not connected to a terminal, and can be overridden by `<width>`. The width of the filename part can be limited by - giving another width `<name-width>` after a comma. The width - of the graph part can be limited by using - `--stat-graph-width=<width>` (affects all commands generating - a stat graph) or by setting `diff.statGraphWidth=<width>` - (does not affect `git format-patch`). - By giving a third parameter `<count>`, you can limit the - output to the first `<count>` lines, followed by `...` if - there are more. + giving another width `<name-width>` after a comma or by setting + `diff.statNameWidth=<width>`. The width of the graph part can be + limited by using `--stat-graph-width=<width>` or by setting + `diff.statGraphWidth=<width>`. Using `--stat` or + `--stat-graph-width` affects all commands generating a stat graph, + while setting `diff.statNameWidth` or `diff.statGraphWidth` + does not affect `git format-patch`. + By giving a third parameter `<count>`, you can limit the output to + the first `<count>` lines, followed by `...` if there are more. + These parameters can also be set individually with `--stat-width=<width>`, `--stat-name-width=<name-width>` and `--stat-count=<count>`. @@ -303,7 +314,7 @@ ifndef::git-format-patch[] -z:: ifdef::git-log[] - Separate the commits with NULs instead of with new newlines. + Separate the commits with NULs instead of newlines. + Also, when `--raw` or `--numstat` has been given, do not munge pathnames and use NULs as output field terminators. @@ -735,7 +746,7 @@ matches "`fooasdfbar`" and "`foo/bar/baz/asdf`" but not "`foobarx`". --rotate-to=<file>:: Discard the files before the named <file> from the output (i.e. 'skip to'), or move them to the end of the output - (i.e. 'rotate to'). These were invented primarily for use + (i.e. 'rotate to'). These options were invented primarily for the use of the `git difftool` command, and may not be very useful otherwise. @@ -852,6 +863,11 @@ endif::git-format-patch[] --no-prefix:: Do not show any source or destination prefix. +--default-prefix:: + Use the default source and destination prefixes ("a/" and "b/"). + This is usually the default already, but may be used to override + config such as `diff.noprefix`. + --line-prefix=<prefix>:: Prepend an additional prefix to every line of output. |